Ventilator and air-purifying apparatus.



'F. A. GUSTAVSON.

VENTILATOR AND AIR PURIFYING APPARATUS.

APPLICATION FILED MAY'31,I 9I7- Patented June 25, 1918.

anvcwto'a g i To all whom it may concern:

' UNITED STATES PATENT OFFICE.

FRANK A. GUSTAVSON, OF SEEKONIL'MASSACHU SETTS.

VENTILATOR AND AIR-PURIFYING APPARATUS.

Be it known that I, FRANK A. Gusravson a subject of the King of Sweden, and resident of Seekonk, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Ventilator and Air-Purifying Apparatus, of which the following is a specification.

This invention relates to ventilating and air-purifying apparatus, which mayv be applied to a window or other opening in the wall of a building, and the object of this invention is to provide such an apparatus with an oscillating flue casing having a mechanically driven fan mounted therein for forcing fresh air into the room.

A further object of the invention is to provide a reservoir in the casing filled with a deodorizing or germicide agent.

A still further object of the invention is to provide means whereby air may be driven .into the casing by the fan from two or more different sources, to be acted upon by the deodorizing agent before being expelled from the casing into the room.

A still further object of the invention is the provision of a'roll of filter screen cloth having a section covering the discharge end of the casing, wherebya fresh section may be drawn from the roll over the casing end as often as desired.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claim.

Fig. 3 is a section on line 3-3 of Fig. i

2 showing the preferred form of the casing i -.means for withdrawing the oscillating tuating mechanism from operative p0s1t1on..

in cross section.

Fig. 4* is a detail plan View showing the Referring to the drawings, 10 designates the flue casing which is herein shown as being substantially square in cross section, but which may be made in any desired form.

The outerend 11 of this casing is preferably rounded on a radius struck from the center 12 on which the casing rotates, and

Patented June 25, 1918.

Application filed May 31, 1917. Serial No. 171,858.

this rounded end extends into the opening 13 in the wall 52 of the building.

A roll 14 is mounted on suitable bearings on the top and at the inner end of this casing 10, on which roll is wound a length of screen cloth 15, which may be of any suitable material, but is preferably formed of cloth which is sufficiently permeable to take up moisture, retain the germs and prevent the impurities from entering the room therethrough, said screen forming the inner end wall of the casing.

By mounting a long length of this cloth on the roll a fresh portion may be readily drawn from the roll over the casing-end as often as desired." This cloth is led back of the cutter plate 16 against the lower edge of which'the used portion 17 of the cloth may be torn when a fresh section is drawn thereunder. The edge of this cloth is secured to the curved lip 18 about the casing-end by means of a spring wire clip 19 and the whole is supported on a frame 20 hinged at the top at 21 and is secured at its lower edge 22 by the spring latch 23, whereby thewhole end of the casing may be swung up when desired, to inspect the interior thereof.

On the inner side of this casing is mounted a rotatable fan 24 on the hub 25, which fan is driven through the miter gears 26, upright shaft 27, miter ears 28, horizontal shaft 29 and motor 30, at any other suitable means may be employed for driving the shaft 29.

This whole casing is mounted to oscillate on a trunnion 31 set in the supporting frame 32 onv ball bearings 33, the oscillating motion being imparted by means of the crank disk 34 through the connecting rod 35, which rod is attached at one end, 36 to the casing and at its opposite end to this disk 34, the latter-being driven from the shaft 29 through the worm 38, worm-gear 39 and short upright shaft 40, whereby asthe shaft 29 rotates to drive the fan,'mot ion is also imparted through the mechanism above described to slowly oscillate the cas ing and so better distribute and diffuse the incoming air in the room.

In some cases it is found advisable to provide a receptacle 41 for a deodorizing or disinfectin agent, such as carbolic acid or other suita le germicide, and to provide a deflecting plate 42 for conducting the air over the surface of this liquid. It is also with thefumes of the germicide from the reservoir. After this mixing action the air passes through the'screen and out into the room.

Across the front opening 13 in the wall 14, I have provided a screen .44 which pre- .vents foreign matter from entering from the outside air, and the quantity of this air may be nicely regulated by means of the closure .or swinging door- 45, which is hinged at its upper edge 46, and is provided at its lower edge with a regulating bar 47 which extends through the wall to the inside of the room.

A rain guard 48 is formed over the hinge 46 to prevent moisture from entering through the swing joint: Y

A feature of this invention is that air may be drawn into the casing from a plurallty of sources, that is, some fresh air may be drawn in from out of doors and some of the air from the room may be also drawn into the casing and from either" or both sides of the casing and after having been treated with germlcide, is forced out into the room.

To accomplish this, I have provided screens 49 supported on spring rolls 50 and led over guide rolls 51, thence close around the face of the circular end of the casing and secured at 52 on the sides thereof.

The casing which is mounted to oscillate on its trunnion 31 is adapted to swing about 45 each side of the center line of the open ing; therefore its open end which corresponds in width to the opening 13 in the wall, upon being swung first to one side and then to the other presents an open space to the inside of the-room on-alternate sides and asthe front end of the-casing swings to the right the screen 49 on that side 1s drawn out from its roll and covers the openlng presented to the room-to screen the 1ncoming air, and the corresponding screenv on the opposite side is wound upon its roll and so as the casingoscillates first one and then the other of these screens is called.

is mounted in a frame 54 so that the whole.

may be-slid sidewise in this frame by means of the pin 55 to withdraw the car 39 from the worm 38 and so prevent urther oscillation of the casing until this gear has been pushed back into operative position.

My improved apparatus may-be used either as an oscillating or as a. stationary air purifier, deodorizer, humidifier or fumigator and is designed to be operated not only as a wall or window ventilator but may be used as well in centers or placed about large department stores, theaters, halls, schools, churches or other buildings where a large number of people assemble.

The foregoing description is directed solely toward the construction illustrated,

but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the termsof the appended claim.

I claim:

An air-purifying and ventilating apparatus comprising a casing, means in said casing for carrying a deodorizing agent, means for drawin air into said casing from a plurality of di erent sources at successive the casing.

In testimony whereof I aflix my signature in presenceof a witness.

FRANK A. GUSTAVSON. Witness:

HOWARD E. BARLOW.

intervals of time. forcing the air into coutact with the deodorizing agent and out of l 

